Although (apprently) legal this is not recommended

Judge acquits Portland man who stripped naked at TSA checkpoint

John E. Brennan, 50, argued that he dropped trou as a protest over intrusive security procedures, and a judge agreed he was within his rights to do so.

Read more: http://www.nydailynews.com/news/national/judge-acquits-portland-man-stripped-naked-tsa-checkpoint-article-1.1117677#ixzz21B3K7yvn

I  strongly advise against trying this your self